﻿Public Class Magazine
    Inherits Book
    Private _Issue As String
    Public Property Issue() As String
        Get
            Return _Issue
        End Get
        Set(ByVal value As String)
            _Issue = value
        End Set
    End Property
    Private _ISSN As String
    Public Property ISSN() As String
        Get
            Return _ISSN
        End Get
        Set(ByVal value As String)
            _ISSN = value
        End Set
    End Property
End Class
